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NERD1 is required for primexine formation and plasma membrane undulation during microsporogenesis in Arabidopsis thaliana

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aBIOTECH 2020年第4期1卷 205-218页

作者： dawei xu Palash Chandra Mondol Sumie Ishiguro Jianxin Shi Dabing Zhang Wanqi Liang Joint International Research Laboratory of Metabolic&Developmental Sciences State Key Laboratory of Hybrid RiceSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghai 200240China Graduate School of Bioagricultural Sciences Nagoya UniversityNagoya 464-8601Japan School of Agriculture Food and WineUniversity of AdelaideAdelaideSA 5064Australia Systems Biotechnology Kyung Hee UniversityYongin 446-701South Korea

The primexine formation and plasma membrane undulation are the crucial steps of pollen wall formation in many ***,the molecular mechanism underlining these processes is largely *** Arabidopsis,NEW ENHANCER OF ROOT DWARFISM1(NERD1),a transmembrane protein,was reported to play pleiotropic roles in plant development including male fertility control;while,how NERD1 disruption impacts male reproduction is yet ***,we revealed that the male sterility of nerd1 mutants is attributed to defects in early steps of pollen wall *** found that nerd1-2 is void of primexine formation and microspore plasma membrane undulation,defective in callose ***,sporopollenin precursors are unable to deposit and assemble on the microspore surface,but instead accumulated in the anther locule and tapetal cells,and ultimately leading to microspore ***1 is localized in the Golgi and is expressed in both vegetative and reproductive organs,with the highest expression in reproductive tissues,including the tapetum,male meiocytes,tetrads and mature pollen *** results suggest that NERD1 is required for the primexine deposition and microspore plasma membrane undulation,thus essential for sporopollenin assembly and pollen exine formation.

关键词： Primexine Male sterile Sporopollenin Arabidopsis thaliana

The Content of Modern Landscape Architecture Discipline and Its Forming Process

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Journal of Environmental & Earth Sciences 2019年第1期1卷 49-52页

作者： Xi Chen dawei xu Safa Fadelelseed Lianying Li Northeast Forestry University HarbinHeilongjiang150040China

Modem landscape architecture discipline is not an emerging *** has a very long *** a long period of multidisciplinary integra-tion,it has formed a modem landscape *** recent years,with the development of society,the problems of environmental problems and economic structural imbalances have become more and more prominent and ***,modern landscape architecture is also facing tremendous changes and is at the crossroads of discipline *** paper analyzes and discusses the content and formation of modem landscape architecture,and points out the characteristics and importance of landscape architecture.

关键词： Landscape architecture Landscape architecture discipline Discipline development History Characteristics Era Chinese style 21st century

Research on medical data storage and sharing model based on blockchain

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High-Confidence Computing 2023年第3期3卷 61-67页

作者： Jian Zhao Wenqian Qiang Zisong Zhao Tianbo An Zhejun Kuang dawei xu Lijuan Shi College of Network Security Changchun UniversityChangchun 130022China College of Computer Science and Technology Changchun UniversityChangchun 130022China College of Electronic Information Engineering Changchun UniversityChangchun 130022China

With the process of medical informatization,medical diagnosis results are recorded and shared in the form of electronic data in the ***,the security of medical data storage cannot be effectively protected and the unsafe sharing of medical data among different institutions is still a hidden danger that cannot be *** solve the above problems,a secure storage and sharing model of private data based on blockchain technology and homomorphic encryption is *** on the idea of blockchain decentralization,the model maintains a reliable medical alliance chain system to ensure the safe transmission of data between different institutions;A privacy data encryption and computing protocol based on homomorphic encryption is constructed to ensure the safe transmission of medical data;Using its complete anonymity to ensure the Blockchain of medical data and patient identity privacy;A strict transaction control management mechanism of medical data based on Intelligent contract automatic execution of preset instructions is *** security verification,compared with the traditional medical big data storage and sharing mode,the model has better security and sharing.

关键词： Blockchain Encryption algorithm Medical data Secure message processing systems storage models Shared-resource systems

Metal-Support Interactions on Ag/Co_(3)O_(4)Nanowire Monolithic Catalysts Promoting Catalytic Soot Combustion

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Transactions of Tianjin University 2022年第3期28卷 174-185页

作者： Xingwang Yi Yuexi Yang dawei xu Ye Tian Song Song Chunmei Cao Xingang Li School of Chemical Engineering&Technology Tianjin UniversityTianjin 300350China Institute of Shaoxing Tianjin UniversityShaoxing 312000China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin Key Laboratory of Applied Catalysis Science and EngineeringTianjin UniversityTianjin 300350China School of Chemical Engineering Zhengzhou UniversityZhengzhou 45000China

Tuning metal-support interactions(MSIs)is an important strategy in heterogeneous catalysis to realize the desirable metal dispersion and redox ability of metal ***,we use pre-reduced Co_(3)O_(4)nanowires(Co-NWs)in situ grown on monolithic Ni foam substrates to support Ag catalysts(Ag/Co-NW-R)for soot *** macroporous structure of Ni foam with crossed Co_(3)O_(4)nanowires remarkably increases the soot-catalyst contact effi *** characterization results demonstrate that Ag species exist as Ag 0 because of the equation Ag^(+)+Co^(2+)=Ag^(0)+Co^(3+),and the pre-reduction treatment enhances interactions between Ag and Co_(3)O_(4).The number of active oxygen species on the Ag-loaded catalysts is approximately twice that on the supports,demonstrating the signifi cant role of Ag sites in generating active oxygen ***,the strengthened MSI on Ag/Co-NW-R further improves this number by increasing metal dispersion and the intrinsic activity determined by the turnover frequency of these oxygen species for soot oxidation compared with the catalyst without pre-reduction of Co-NW(Ag/Co-NW).In addition to high activity,Ag/Co-NW-R exhibits high catalytic stability and water *** strategy used in this work might be applicable in related catalytic systems.

关键词： Metal-support interaction Monolithic catalysts Ag Co_(3)O_(4)nanowires Soot oxidation

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Developmet Roadmap

China Weekly 2021年第4期 12-16页

作者： xu dawei 不详

China has launched new ambitious goals toward building a"modern socialist country'drawing on its experience of setting medium-term goals in its five-year *** March 12,China's National Peoples Congress(NPC)concluded its annual session in *** the most important event in Chinas political agenda,the annual NPC sesion serves as a major poliy plaform and forum to launch long-term plans.

关键词： Beijing. goals launch

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Resetting the Bar

China Weekly 2021年第5期 10-11页

作者： xu dawei 不详

NewsChina scours China's latest annual government report for clues to the direction of macro-economic policies in 2021 CI hina released its yearly budget in the government work report delivered during the annual National People's Congress(NPC)held in *** 2020,China is perhaps the world's only major economy to expand,posting GDP growth of 2.3 percent.

关键词： budget perhaps yearly

Effectiveness of Post-Traumatic Growth Intervention to Promote Positive Post-Traumatic Traits in Chinese Breast Cancer Patients:A Randomized Controlled Trial

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International Journal of Mental Health Promotion 2023年第10期25卷 1089-1102页

作者： Cuirong xu Han Yan dawei xu Guanjie Chen Qian xu Kunpeng Li Yehao Rui Zanmin Song Neeraj Gill Jing Sun Department of Nursing Zhongda Hospital Southeast UniversityNanjing210009China School of Medicine Southeast UniversityNanjing210009China School of Medicine and Dentistry Gold Coast CampusGriffith UniversityQueenslandQ4215Australia Institute for Integrated Intelligence and Systems Gold Coast CampusGriffith UniversityQueenslandQ4215Australia Department of Critical Care Medicine Zhongda Hospital Southeast UniversityNanjing210009China Breast Diagnosis and Treatment Center Zhongda Hospital Southeast UniversityNanjing210009China Department of Oncology Zhongda Hospital Southeast UniversityNanjing210009China

Objective:The purpose of this study was to evaluate the effectiveness of post-traumatic growth(PTG)model-based intervention to improve positive psychological traits in Chinese breast cancer ***:A randomized control trial of a psychological group intervention based on PTG ***:The Clinical Trial was registered on 17 August 2019 at Chinese Clinical *** with Registration number ChiCTR1900025264.A total of 92 patients with breast cancer were *** participants were randomly assigned to the experimental group(n=46)and the control group(n=46).A six-session psychological group intervention based on PTG model was implemented in the experimental group,and a six-session health education was implemented in the control *** outcomes weremeasured at baseline(pre-intervention),3 weeks,6 weeks after the *** primary outcome was posttraumatic growth assessed by the Chinese version of the Post-Traumatic Growth Inventory(PTGI);Secondary outcomes included psychological resilience,family resilience,rumination,and ***:A total of 87 patients with breast cancer completed this study,including 44 patients in the experimental group and 43 patients in the control *** was no significant difference in baseline data of breast cancer patients between the two groups except for the treatment regimen(p>0.05).The two groups were compared after the intervention;the interaction effects between the total scores of posttraumatic growth,family resilience,and self-disclosure and the time term were statistically significant(p<0.05),indicating that the trend of change in total scores of post-traumatic growth,family resilience,and self-disclosure differed between the experimental and control groups over time,and the scores improved in the experimental group were significantly higher than those in the control *** comparison of psychological resilience and total score of rumination at each time point was statistically signifi

关键词： Post-traumatic growth psychological group intervention resilience rumination self-disclosure breast cancer Tech Science Press

The polyketide synthase OsPKS2 is essential for pollen exine and Ubisch body patterning in rice

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Journal of Integrative Plant Biology 2017年第9期59卷 612-628页

作者： Xiaolei Zhu Jing Yu Jianxin Shi Takayuki Tohge Alisdair R.Fernie Sagit Meir Asaph Aharoni dawei xu Dabing Zhang Wanqi Liang Joint International Research Laboratory of Metabolic&Developmental Sciences Shanghai Jiao Tong University-University of Adelaide Joint Centre for Agriculture and HealthSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghai 200240China Central Metabolism Group Max Planck Institute of Molecular Plant Physiology14476 Potsdam-GolmGermany Department of Plant Sciences Weizmann Institute of SciencePO Box 26Rehovot 76100Israel School of Agriculture Food and WineUniversity of AdelaideWaite CampusSA 5005Australia

Lipid and phenolic metabolism are important for pollen exine formation. In Arabidopsis, polyketide synthases （PKSs） are essential for both sporopollenin biosynthesis and exine formation. Here, we characterized the role of a polyketide synthase （OsPKS2） in male reproduction of rice （Oryza sativa）. Recombinant OsPKS2 catalyzed the condensation of fatty acyl-CoA with malonyl- CoA to generate triketide and tetraketide α-pyrones, the main components of pollen exine. Indeed, the ospks2 mutant had defective exine patterning and was male sterile. However, the mutant showed no significant reduction in sporopollenin accumulation. Compared with the WT （wild type）, ospks2 displayed unconfined and amorphous tectum and nexine layers in the exine, and less organized Ubisch bodies. Like the pksb/lap5 mutant of the Arabidopsis ortholog, ospks2 showed broad alterations in the profiles of anther-related phenolic compounds. However, unlike pksb/laps, in which most detected phenolics were substantially decreased, ospks2 accumu- lated higher levels of phenolics. Based on these results and our observation that OsPKS2 is unable to fully restore the exine defects in the pksb/laps, we propose that PKS proteins have functionally diversified during evolution. Collectively, our results suggest that PKSs represent a conserved and diversified biochemical pathway for anther and pollen development in higher plants.

关键词： PKS The polyketide synthase OsPKS2 is essential for pollen exine and Ubisch body patterning in rice Figure

Tax Evasion: Gimme Shelter

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China Weekly 2022年第1期 37-39页

作者： xu dawei Meng Qian 不详

The tax department of Hangzhou,Zhejang Province recently fined two well-known livestream influencers,Zhu Chenhui and Lin Shanshan,for tax evasion on online ***,known as fashion influencer xueli Cherie,was ordered to p... 详细信息

关键词： milli Hangzhou ordered